I always found it disturbing that God’s judgments in Revelation fell on so many deaf ears. Obviously a door was shut on them “lest they see with their eyes, and understand with their heart, and turn, and I would heal them.”
Regarding the catastrophic events described above, you would think anyone alive would need some sort of supernatural constitution just to “take it all in”. Maybe they are given one, since somewhere in the process people want to die but cannot.
Those are indeed warnings, but God is also quite capable of warning of the need for salvation by other means. God repeats Himself because we are all deaf to love. The events of Revelation, however they actually do play out, will be fully in consistency with what the willing soul knows of God today.